fuels, such as gas, coal and oil, that were formed underground millions of years ago fossil fuels strong, unpleasant and sometimes dangerous gas or smoke fumes more than enough abundant connection to the main supply of electricity, water, etc. the grid to pay part of the cost of something to subsidise gases, especially carbon dioxide, that prevent heat from the earth escaping into space greenhouse gases to go down in amount very quickly and suddenly to plummet trade in large quantities of substances or products such as oil a commodity market to reduce carbon dioxide emissions and global warming to bend the curve of emissions an unwanted or unexpected result a side effect https://339efcb25eb75e967b0d-ff8eeadd950d51fd1fc939dca75b3973.ssl.cf1.rackcdn.com/assets_default.swf